AT Ogielski,
JH Cowie - US Patent 8,161,152, 2012 - Google Patents
US PATENT DOCUMENTS 6,173,324 B1* 1/2001 D'Souza....................... TO9, 224 6,182,224
B1* 1/2001 Phillips et al..................... T26. 6 6,188,936 B1 2/2001 Maguire et al. 6,392,997 …